# import ubuntu:latest from quay.io/fmissi
oc new-project myapp
cat <<EOF | oc create -f -
apiVersion: image.openshift.io/v1
kind: ImageStreamImport
metadata:
  name: app
  namespace: myapp
spec:
  import: true
  images:
  - from:
      kind: DockerImage
      name: quay.io/fmissi/ubuntu
    to:
      name: latest
EOF

# copy quay.io/fmissi/ubuntu:latest to docker.io/fmissi/ubuntu:latest to ensure both our image streams point to the same image
skopeo copy --all docker://quay.io/fmissi/ubuntu:latest docker://docker.io/fmissi/ubuntu:latest

# create another image stream, on a different project, using the docker.io/fmissi reference
oc new-project myotherapp
cat <<EOF | oc create -f -
apiVersion: image.openshift.io/v1
kind: ImageStreamImport
metadata:
  name: otherapp
  namespace: myotherapp
spec:
  import: true
  images:
  - from:
      kind: DockerImage
      name: docker.io/fmissi/ubuntu
    to:
      name: latest
EOF

# now compare the dockerImageReferences from the ImageStream vs the ImageStreamImage
oc get is app -ojson -nmyapp|jq '.status.tags[0].items[0].dockerImageReference'
"quay.io/fmissi/ubuntu@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7"

oc get imagestreamimage app@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7 -ojson -nmyapp|jq '.image.dockerImageReference'
"quay.io/fmissi/ubuntu@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7"


oc get is otherapp -ojson -nmyotherapp|jq '.status.tags[0].items[0].dockerImageReference'
"docker.io/fmissi/ubuntu@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7"

oc get imagestreamimage otherapp@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7 -ojson -nmyotherapp|jq '.image.dockerImageReference'
"quay.io/fmissi/ubuntu@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7"

oc get imagestreamimage otherapp@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7 -ojson -nmyotherapp|jq '.image.dockerImageReference'

oc get is otherapp -ojson -nmyotherapp|jq '.status.tags[0].items[0].dockerImageReference'
"docker.io/fmissi/ubuntu@sha256:97923994fdc1c968eed6bdcb64be8e70d5356b88cfab0481cb6b73a4849361b7"